Practice Back-track Loading (2.2.1) - Cycle Time of a Scraper - Construction Engineering & Management

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9 questions

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6 sample questions

Question 1.
Define cycle time.
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Think about what actions a scraper performs in its operation.
Question 2.
What is fixed time?
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Consider the components of cycle time that remain constant.
3Question 3.
What does cycle time include?
- Only loading time
- Loading
- hauling
- dumping and more
- Just haul time
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Think about all the operations that scrapers perform.
4Question 4.
True or False: Fixed time is dependent on the distance travelled.
- True
- False
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Recall the definitions of fixed vs. variable time.
Question 5.
A scraper has a load capacity of 20 m3. If it takes 3 minutes to go from 0 to 80% capacity and then the loading slows significantly, explain how you would adapt the loading approach.
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Think of the loading growth curve and its implications.
Question 6.
Calculate the expected cycle time of a scraper given varied haul distances and understand its impact on variable time.
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Explore calculations involving variable time elements.

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